CN110736644B - Bottom-sinking type micro plastic collector - Google Patents
Bottom-sinking type micro plastic collector Download PDFInfo
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- CN110736644B CN110736644B CN201910740544.4A CN201910740544A CN110736644B CN 110736644 B CN110736644 B CN 110736644B CN 201910740544 A CN201910740544 A CN 201910740544A CN 110736644 B CN110736644 B CN 110736644B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1031—Sampling from special places
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Abstract
The invention discloses a sunk-bottom type micro-plastic collector, and aims to provide a sunk-bottom type micro-plastic collector which can perform fixed-point sampling on micro-plastic deposited on the seabed and mixed in seabed sediments and is convenient to sample. The novel vertical guide rod type dust collector comprises a support, a vertical guide rod arranged on the support, a vertical isolation cylinder which goes up and down along the vertical guide rod, a stirring device, a triggering mechanism, a time delay acquisition mechanism and an acquisition device which are arranged in the vertical isolation cylinder, wherein a guide sleeve matched with the vertical guide rod is arranged on the vertical isolation cylinder, a guide rod limiting block is arranged below the vertical guide rod and is positioned on the guide sleeve, and when the guide rod limiting block is supported on the lower end face of the guide sleeve, the position of the lower end of the vertical guide rod is higher than the position of the lower end of the vertical isolation cylinder.
Description
Technical Field
The invention relates to the field of marine environment monitoring, in particular to a sunk-bottom type micro-plastic collector.
Background
Plastics have become essential substances in modern human life due to their unique physicochemical properties. However, plastics that enter the environment have a persistent effect on the environment due to their difficult degradability. The plastic garbage entering the environment is continuously cracked under the action of long-term external force such as solar radiation (photodegradation and embrittlement), wind power, waves and biological action, and the like, so as to form plastic particles or fragments with the particle size of less than 5 mm, namely the micro plastic. Because the particle size of the micro-plastic is similar to that of food of a plurality of plankton, the micro-plastic is easily swallowed by various aquatic organisms as bait by mistake, and potential harm is caused to the micro-plastic. Meanwhile, the micro plastic can be retained in the organism for a long time, and is transferred and enriched in the food net, thereby finally threatening the human health. At present, the marine environment monitoring shows that the micro-plastic is found in seawater and seabed sediments.
In the current marine environmental monitoring, the collection and detection of the micro-plastics in the sea water are generally carried out, but the micro-plastics deposited on the sea bottom and mixed in the sediment on the sea bottom are difficult to be monitored due to the difficulty in collecting proper samples.
Disclosure of Invention
The invention aims to provide a sunk micro plastic collector which can carry out fixed-point sampling on micro plastic deposited on the seabed and mixed in seabed sediments and is convenient to sample.
The technical scheme of the invention is as follows:
the utility model provides a heavy end formula micro-plastic collector, includes the support, sets up vertical guide arm on the support, along vertical isolation section of thick bamboo, the stirring device of setting in vertical isolation section of thick bamboo, trigger mechanism, time delay collection mechanism and the collection system that goes up and down of vertical guide arm, be equipped with on the vertical isolation section of thick bamboo with vertical guide arm complex guide pin bushing, the below that is equipped with the guide pin bushing on the vertical guide arm and is located the guide pin bushing is equipped with the guide arm stopper, when the guide arm stopper supports under the guide pin bushing on the terminal surface, the lower extreme position of vertical guide arm is higher than the lower extreme position of vertical isolation section of thick bamboo.
The stirring device comprises a roller brush which is rotatably arranged in the lower part of the vertical isolation cylinder through a horizontal shaft lever and a volute spiral spring which is arranged on the side wall of the vertical isolation cylinder and used for resetting the roller brush, wherein one end of the horizontal shaft lever penetrates through the vertical isolation cylinder and is positioned on the outer side of the vertical isolation cylinder;
the trigger mechanism comprises a radial through hole arranged on the horizontal shaft rod and a vertical limiting pin used for being matched with the radial through hole, the radial through hole is positioned on the outer side of the vertical isolating cylinder, and the vertical limiting pin is connected with the bottom of the vertical guide rod through a connecting rod; the time delay acquisition mechanism comprises a bobbin coaxially arranged on a horizontal shaft rod, a first connecting wire wound on the bobbin, a time delay cylinder body with two open ends, a first piston and a second piston which are arranged in the time delay cylinder body in a sliding mode, a piston connecting rod for connecting the first piston and the second piston, a first limiting block arranged on the inner side surface of the time delay cylinder body and located between the first piston and the second piston, and a first interface arranged on the outer side surface of the time delay cylinder body, the time delay cylinder body is connected with a vertical isolation cylinder through a connecting piece, the end portion of the first connecting wire is connected with the first piston, and the first interface and the second piston are located on the same side of the first limiting block; the collecting device comprises a vertical collecting cylinder body with the upper end and the lower end closed, a vertical switching cylinder body with the upper end and the lower end closed, an upper piston and a lower piston which are arranged in the vertical collecting cylinder body in a sliding mode, a second connecting line for connecting the upper piston and the lower piston, a second limiting block which is arranged on the inner side surface of the vertical collecting cylinder body and is positioned between the upper piston and the lower piston, a switching piston which is arranged in the vertical switching cylinder body in a sliding mode, and a reset spring which is arranged in the vertical switching cylinder body and is positioned below the switching piston, wherein the inner diameter of the vertical collecting cylinder body is larger than that of the vertical switching cylinder body, the lower end surface of the vertical switching cylinder body is provided with a second interface, the upper end surface of the vertical switching cylinder body is provided with a third interface, the upper end surface of the vertical collecting cylinder body is provided with a fourth interface, the outer side surface of the vertical collecting cylinder body is provided with a water inlet, and the water inlet is positioned below the second limiting block, the lower terminal surface of vertical collection cylinder body is equipped with down the through-hole, first interface is connected through first connecting pipe with the second interface, the third interface is connected through the second connecting pipe with the fourth interface.
When the micro plastic deposited on the seabed and mixed in seabed sediments is sampled at a fixed point, firstly, the sunk micro plastic collector is transported to a designated sea area through a ship, then, the first piston and the second piston are driven to move upwards until the first piston is abutted against the first limiting block, in the process, the first piston drives the horizontal shaft rod and the roller brush to rotate through the first connecting line and the winding drum, so that the volute spiral spring generates torsion, when the first piston is abutted against the first limiting block, the first interface is positioned between the first piston and the second piston, and the radial through hole is in a vertical state;
secondly, the vertical guide rod is driven to move upwards through the bracket, so that the vertical limiting pin is inserted into the radial through hole until the guide rod limiting block abuts against the lower end face of the guide sleeve;
thirdly, the sinking type micro plastic collector is placed in a designated sea area through the connecting rope, then the connecting rope is gradually released, and the sinking type micro plastic collector is placed on the sea bottom; when the bottom-sinking type micro-plastic collector is put down to the seabed, the lower end of the vertical isolation cylinder is firstly contacted with the seabed, and the bristles of the roller brush are also contacted with the seabed after the lower end of the vertical isolation cylinder is contacted with the seabed; then, the vertical guide rod moves downwards under the action of gravity and drives the vertical limiting pin to move downwards together, so that the vertical limiting pin is separated from the radial through hole until the lower end of the vertical guide rod is supported on the seabed;
after the vertical limiting pin is separated from the radial through hole, the horizontal shaft rod and the roller brush are driven to rotate under the action of the volute spiral spring, in the process, sediment (including micro plastic) deposited on the seabed is stirred together by the roller brush and suspended in the vertical isolating cylinder, meanwhile, the first connecting wire is gradually wound on the winding cylinder, so that the first piston and the second piston are driven to move towards the winding cylinder until the second piston abuts against the first limiting block, and at the moment, the first interface is positioned on the same side of the first piston and the second piston;
when the first interface is positioned on the same side of the first piston and the second piston, external water pressure enters the vertical transfer cylinder body through the first interface, the first connecting pipe and the second interface, and because the inner diameter of the vertical collection cylinder body is larger than that of the vertical transfer cylinder body, the lower piston moves upwards along the vertical collection cylinder body under the action of the external water pressure, so that seawater and suspended sediments (including micro plastics) in the vertical isolation cylinder are sucked into the vertical collection cylinder body through the water inlet together until the upper piston abuts against the inner top surface of the vertical collection cylinder body, at the moment, the second connecting line is stretched straight, and drives the lower piston to move upwards to the position above the water inlet, so that seabed sediments (including micro plastics) are collected in the vertical collection cylinder body between the upper piston and the lower piston;
fourthly, the sunk micro plastic collector is lifted by the connecting rope, so that the micro plastic deposited on the seabed and mixed in the seabed sediments can be sampled at fixed points, and the sampling operation is convenient.
Preferably, when the first piston abuts against the first limiting block, the first interface is located between the first piston and the second piston, and the radial through hole is in a vertical state; when the second piston abuts against the first limiting block, the first interface is located on the same side of the first piston and the second piston.
Preferably, when the lower piston abuts against the inner bottom surface of the vertical collecting cylinder body, the water inlet is positioned above the lower piston; when the upper piston abuts against the inner top surface of the vertical collecting cylinder body, the second connecting line is stretched straight and drives the lower piston to move upwards to the position above the water inlet.
Preferably, the time delay acquisition mechanism further comprises a pull rope, a first end of the pull rope is connected with the second piston, and a second end of the pull rope extends out of the outer side of the time delay cylinder body through one port of the time delay cylinder body. Therefore, the first piston and the second piston can be driven to move upwards through the pull rope, and the practical operation is facilitated.
Preferably, the time delay acquisition mechanism further comprises a limiting sleeve, the limiting sleeve is connected with the time delay cylinder body through a connecting piece, the second end of the pull rope penetrates through the limiting sleeve, a limiting ball is arranged at the second end of the pull rope, and the diameter of the limiting ball is larger than the inner diameter of the limiting sleeve. Therefore, the whole stay cord can be prevented from falling into the delay cylinder body.
Preferably, the delay cylinder is vertically arranged, and the sum of the friction force between the first piston and the second piston and the delay cylinder is greater than the sum of the gravity force between the first piston and the piston connecting rod and the gravity force between the second piston and the piston connecting rod.
Preferably, the medical support further comprises a connecting rope, and one end of the connecting rope is connected with the support.
Preferably, a balancing weight is arranged on the vertical guide rod and below the guide rod limiting block.
Preferably, the roller brush comprises a roller coaxial with the horizontal shaft and a plurality of bristles uniformly distributed on the outer side surface of the roller, the roller is fixedly connected with the horizontal shaft, the bristles extend along the radial direction of the roller, and the length of the bristles is greater than the distance between the axis of the horizontal shaft and the lower end surface of the vertical isolation cylinder.
The invention has the beneficial effects that: the sampling device can perform fixed-point sampling on the micro plastic deposited on the seabed and mixed in the seabed sediments, and is convenient to sample.
Drawings
Fig. 1 is a schematic structural view of the bottom-sinking micro plastic collector of the invention before being lowered to the sea bottom.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a schematic structural diagram of the bottom-sinking type micro plastic collector of the invention after being placed on the sea bottom.
In the figure:
a bracket 1;
a vertical guide rod 2, a guide rod limiting block 2.1 and a balancing weight 2.2;
a vertical isolation cylinder 3 and a guide sleeve 3.1;
the device comprises a stirring device 5, a horizontal shaft rod 5.1, a roller brush 5.2, a volute spiral spring 5.3 and a mounting shell 5.4;
the device comprises a delay acquisition mechanism 6, a delay cylinder body 6.1, a bobbin 6.2, a first connecting wire 6.3, a first piston 6.4, a second piston 6.5, a first limiting block 6.6, a piston connecting rod 6.7, a first interface 6.8, a pull rope 6.9, a limiting sleeve 6.10 and a limiting ball 6.11;
the device comprises a collecting device 7, a vertical collecting cylinder 7.1, a vertical switching cylinder 7.2, an upper piston 7.3, a lower piston 7.4, a second limiting block 7.5, a second connecting line 7.6, a water inlet 7.7, a lower through hole 7.8, a switching piston 7.9, a reset spring 7.10, a second interface 7.11, a third interface 7.12, a fourth interface 7.13, a first connecting pipe 7.14 and a second connecting pipe 7.15;
trigger mechanism 8, radial through-hole 8.1, vertical spacer pin 8.2, connecting rod 8.3.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited thereby. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections, either mechanical or electrical, or communicating with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in fig. 1 and 2, the bottom-sinking type micro plastic collector comprises a support 1, a connecting rope 4, a vertical guide rod 2 arranged on the support, a vertical isolation cylinder 3 ascending and descending along the vertical guide rod, a stirring device 5 arranged in the vertical isolation cylinder, a triggering mechanism 8, a time-delay collection mechanism 6 and a collection device 7. One end of the connecting rope is connected with the bracket. The vertical guide rod is positioned below the bracket. In this embodiment, the number of the vertical guide rods is two, and the two vertical guide rods are located on two opposite sides of the vertical isolation cylinder. The vertical separation cylinder is provided with guide sleeves 3.1 matched with the vertical guide rods, and the guide sleeves correspond to the vertical guide rods one by one. The guide sleeve is positioned on the outer side of the vertical isolation cylinder and is connected with the vertical isolation cylinder through a connecting piece. A guide rod limiting block 2.1 is arranged on the vertical guide rod and below the guide sleeve. When the guide rod limiting block abuts against the lower end face of the guide sleeve, the lower end of the vertical guide rod is higher than the lower end of the vertical isolating cylinder.
The stirring device 5 comprises a roller brush 5.2 which is rotatably arranged in the lower part of the vertical isolation cylinder through a horizontal shaft rod 5.1 and a volute spiral spring 5.3 which is arranged on the side wall of the vertical isolation cylinder and is used for resetting the roller brush. One end of the horizontal shaft lever passes through the through hole on the side wall of the vertical isolation cylinder and is positioned outside the vertical isolation cylinder. In this embodiment, agitating unit is still including installation casing 5.4, and the installation casing is fixed on the lateral wall of vertical isolation section of thick bamboo, and horizontal shaft pole passes the through-hole on the installation casing, and volute spiral spring is located the installation casing, and horizontal shaft pole passes volute spiral spring, and volute spiral spring's one end is fixed on the installation casing, and volute spiral spring's the other end is fixed on horizontal shaft pole. The roller brush comprises a roller coaxial with the horizontal shaft rod and a plurality of brush hairs uniformly distributed on the outer side surface of the roller. The roller is fixedly connected with the horizontal shaft rod. The bristles extend along the radial direction of the roller, and the length of the bristles is larger than the distance between the axis of the horizontal shaft rod and the lower end face of the vertical isolation cylinder.
The trigger mechanism 8 comprises a radial through hole 8.1 arranged on the horizontal shaft and a vertical limit pin 8.2 matched with the radial through hole. The radial through hole is positioned on the outer side of the vertical isolating cylinder. The vertical limit pin is connected with the bottom of the vertical guide rod through a connecting rod 8.3, which is located below the horizontal shaft rod in this embodiment.
The time-delay acquisition mechanism 6 comprises a bobbin 6.2 coaxially arranged on a horizontal shaft rod, a first connecting wire 6.3 wound on the bobbin, a time-delay cylinder body 6.1 with two open ends, a first piston 6.4 and a second piston 6.5 which are arranged in the time-delay cylinder body in a sliding manner, a piston connecting rod 6.7 connecting the first piston and the second piston, a first limiting block 6.6 arranged on the inner side surface of the time-delay cylinder body and positioned between the first piston and the second piston, and a first interface 6.8 arranged on the outer side surface of the time-delay cylinder body. The bobbin is fixed on the horizontal shaft lever. The time delay cylinder body is connected with the vertical isolation cylinder through a connecting piece. The end of the first connecting wire is connected to the first piston. The first interface and the second piston are positioned on the same side of the first limiting block.
In this embodiment, the vertical setting of time delay cylinder body, the time delay cylinder body is located the bobbin directly over, and first piston is located the below of first stopper, and the second piston is located the top of first stopper, and the sum of the frictional force between first piston and second piston and the time delay cylinder body is greater than the sum of the gravity of first piston, second piston and piston connecting rod.
In this embodiment, the time delay acquisition mechanism further comprises a pull rope 6.9, a first end of the pull rope is connected with the second piston, and a second end of the pull rope extends out of the outer side of the time delay cylinder body through an upper port of the time delay cylinder body. Therefore, the first piston and the second piston can be driven to move upwards through the pull rope, and the practical operation is facilitated.
As shown in fig. 1 and fig. 2, when the first piston abuts against the first stopper, the first interface is located between the first piston and the second piston, and the radial through hole is in a vertical state.
As shown in fig. 3, when the second piston abuts against the first stopper, the first interface is located on the same side of the first piston and the second piston, that is, the first interface is located above the second piston.
As shown in fig. 1, the collecting device 7 includes a vertical collecting cylinder 7.1 with upper and lower closed ends, a vertical transfer cylinder 7.2 with upper and lower closed ends, an upper piston 7.3 and a lower piston 7.4 slidably disposed in the vertical collecting cylinder, a second connecting line 7.6 connecting the upper piston and the lower piston, a second limiting block 7.5 disposed on the inner side surface of the vertical collecting cylinder and located between the upper piston and the lower piston, a transfer piston 7.9 slidably disposed in the vertical transfer cylinder, and a return spring 7.10 disposed in the vertical transfer cylinder and located below the transfer piston. The internal diameter of the vertical acquisition cylinder body is larger than that of the vertical switching cylinder body. The lower end of the reset spring is propped against the bottom surface of the vertical switching cylinder body, and the upper end of the reset spring is propped against the lower end surface of the switching piston. The outer lateral surface of the vertical collecting cylinder body is provided with a water inlet 7.7, and the water inlet is positioned below the second limiting block. The lower end face of the vertical collecting cylinder body is provided with a lower through hole 7.8. The lower terminal surface of vertical switching cylinder body is equipped with second interface 7.11, and the up end of vertical switching cylinder body is equipped with third interface 7.12. The upper end face of the vertical collecting cylinder body is provided with a fourth connector 7.13. The first interface is connected with the second interface through a first connecting pipe 7.14, and the third interface is connected with the fourth interface through a second connecting pipe 7.15.
As shown in fig. 1, when the switching piston abuts against the inner top surface of the vertical switching cylinder body, the upper piston abuts against the second limiting block. When the lower piston is abutted against the inner bottom surface of the vertical collecting cylinder body, the water inlet is positioned above the lower piston. The gravity of the lower piston is larger than the friction force between the lower piston and the vertical collecting cylinder body.
As shown in fig. 3, when the upper piston abuts against the inner top surface of the vertical collecting cylinder, the second connecting line is stretched straight and drives the lower piston to move upwards to the upper part of the water inlet.
As shown in fig. 1, when sampling micro plastic deposited on the seabed and mixed in seabed sediment at a fixed point, firstly, the submersible micro plastic collector is transported to a designated sea area by a ship, then, the first piston and the second piston are driven by the pull rope to move upwards until the first piston is abutted against the first limit block, in the process, the first piston drives the horizontal shaft rod and the roller brush to rotate through the first connecting line and the winding drum, so that the spiral spring is twisted, when the first piston is abutted against the first limit block, the first interface is positioned between the first piston and the second piston, and the radial through hole is in a vertical state;
secondly, the vertical guide rod is driven to move upwards through the bracket, so that the vertical limiting pin is inserted into the radial through hole until the guide rod limiting block abuts against the lower end face of the guide sleeve;
thirdly, the sinking type micro plastic collector is placed in a designated sea area through the connecting rope, then the connecting rope is gradually released, and the sinking type micro plastic collector is placed on the sea bottom; as shown in fig. 3, when the bottom-sinking type micro plastic collector is put down to the sea bottom, the lower end of the vertical isolation cylinder is firstly contacted with the sea bottom, and after the lower end of the vertical isolation cylinder is contacted with the sea bottom, the brush hair of the roller brush is also contacted with the sea bottom; then, the vertical guide rod moves downwards under the action of gravity and drives the vertical limiting pin to move downwards together, so that the vertical limiting pin is separated from the radial through hole until the lower end of the vertical guide rod is supported on the seabed;
after the vertical limiting pin is separated from the radial through hole, the horizontal shaft rod and the roller brush are driven to rotate under the action of the volute spiral spring, in the process, sediment (including micro plastic) deposited on the seabed is stirred together by the roller brush and suspended in the vertical isolating cylinder, meanwhile, the first connecting wire is gradually wound on the winding cylinder, so that the first piston and the second piston are driven to move towards the winding cylinder until the second piston abuts against the first limiting block, and at the moment, the first interface is positioned on the same side of the first piston and the second piston;
when the first interface is positioned on the same side of the first piston and the second piston, external water pressure enters the vertical transfer cylinder body through the first interface, the first connecting pipe and the second interface, and because the inner diameter of the vertical collection cylinder body is larger than that of the vertical transfer cylinder body, the lower piston moves upwards along the vertical collection cylinder body under the action of the external water pressure, so that seawater and suspended sediments (including micro plastics) in the vertical isolation cylinder are sucked into the vertical collection cylinder body through the water inlet together until the upper piston abuts against the inner top surface of the vertical collection cylinder body, at the moment, the second connecting line is stretched straight, and drives the lower piston to move upwards to the position above the water inlet, so that seabed sediments (including micro plastics) are collected in the vertical collection cylinder body between the upper piston and the lower piston;
fourthly, the sunk micro plastic collector is lifted by the connecting rope, so that the micro plastic deposited on the seabed and mixed in the seabed sediments can be sampled at fixed points, and the sampling operation is convenient.
Further, as shown in fig. 1, the delay acquisition mechanism further comprises a limiting sleeve 6.10, the limiting sleeve is connected with the delay cylinder body through a connecting piece, and in the embodiment, the limiting sleeve is located above the delay cylinder body. The second end of stay cord passes the stop collar, and the second end of stay cord is equipped with spacing ball 6.11, and the diameter of spacing ball is greater than the internal diameter of stop collar. Therefore, the whole stay cord can be prevented from falling into the delay cylinder body.
Further, as shown in fig. 1, a counterweight 2.2 is arranged on the vertical guide rod and below the guide rod limiting block. Therefore, the vertical guide rod can be guaranteed to move downwards under the action of gravity, and the vertical limiting pin is driven to move downwards together, so that the vertical limiting pin is separated from the radial through hole.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (7)
1. A bottom-sinking type micro-plastic collector is characterized by comprising a support, a vertical guide rod arranged on the support, a vertical isolation cylinder which goes up and down along the vertical guide rod, a stirring device arranged in the vertical isolation cylinder, a trigger mechanism, a time-delay collection mechanism and a collection device, wherein the vertical isolation cylinder is provided with a guide sleeve matched with the vertical guide rod;
the stirring device comprises a roller brush which is rotatably arranged in the lower part of the vertical isolation cylinder through a horizontal shaft lever and a volute spiral spring which is arranged on the side wall of the vertical isolation cylinder and used for resetting the roller brush, and one end of the horizontal shaft lever penetrates through the vertical isolation cylinder and is positioned on the outer side of the vertical isolation cylinder;
the trigger mechanism comprises a radial through hole arranged on the horizontal shaft rod and a vertical limiting pin used for being matched with the radial through hole, the radial through hole is positioned on the outer side of the vertical isolating cylinder, and the vertical limiting pin is connected with the bottom of the vertical guide rod through a connecting rod;
the time delay acquisition mechanism comprises a bobbin coaxially arranged on a horizontal shaft rod, a first connecting wire wound on the bobbin, a time delay cylinder body with two open ends, a first piston and a second piston which are arranged in the time delay cylinder body in a sliding mode, a piston connecting rod for connecting the first piston and the second piston, a first limiting block arranged on the inner side surface of the time delay cylinder body and located between the first piston and the second piston, and a first interface arranged on the outer side surface of the time delay cylinder body, the time delay cylinder body is connected with a vertical isolation cylinder through a connecting piece, the end portion of the first connecting wire is connected with the first piston, and the first interface and the second piston are located on the same side of the first limiting block;
the collecting device comprises a vertical collecting cylinder body with the upper end and the lower end closed, a vertical switching cylinder body with the upper end and the lower end closed, an upper piston and a lower piston which are arranged in the vertical collecting cylinder body in a sliding mode, a second connecting line for connecting the upper piston and the lower piston, a second limiting block which is arranged on the inner side surface of the vertical collecting cylinder body and is positioned between the upper piston and the lower piston, a switching piston which is arranged in the vertical switching cylinder body in a sliding mode, and a reset spring which is arranged in the vertical switching cylinder body and is positioned below the switching piston, wherein the inner diameter of the vertical collecting cylinder body is larger than that of the vertical switching cylinder body, the lower end surface of the vertical switching cylinder body is provided with a second interface, the upper end surface of the vertical switching cylinder body is provided with a third interface, the upper end surface of the vertical collecting cylinder body is provided with a fourth interface, the outer side surface of the vertical collecting cylinder body is provided with a water inlet, and the water inlet is positioned below the second limiting block, the lower end face of the vertical collecting cylinder body is provided with a lower through hole, the first interface is connected with the second interface through a first connecting pipe, and the third interface is connected with the fourth interface through a second connecting pipe;
when the first piston abuts against the first limiting block, the first interface is located between the first piston and the second piston, and the radial through hole is in a vertical state; when the second piston abuts against the first limiting block, the first interface is positioned on the same side of the first piston and the second piston;
when the lower piston abuts against the inner bottom surface of the vertical collecting cylinder body, the water inlet is positioned above the lower piston; when the upper piston abuts against the inner top surface of the vertical collecting cylinder body, the second connecting line is stretched straight and drives the lower piston to move upwards to the position above the water inlet.
2. The sunk-bottom type micro plastic collector according to claim 1, wherein the delay collecting mechanism further comprises a pull rope, a first end of the pull rope is connected with the second piston, and a second end of the pull rope extends out of the outer side of the delay cylinder body through one port of the delay cylinder body.
3. The bottom-sinking type micro plastic collector according to claim 2, wherein the delay collecting mechanism further comprises a limiting sleeve, the limiting sleeve is connected with the delay cylinder body through a connecting piece, the second end of the pull rope penetrates through the limiting sleeve, a limiting ball is arranged at the second end of the pull rope, and the diameter of the limiting ball is larger than the inner diameter of the limiting sleeve.
4. The bottom-sinking type micro-plastic collector according to claim 1, wherein the delay cylinder is vertically arranged, and the sum of the friction force between the first piston and the second piston and the delay cylinder is larger than the sum of the gravity force between the first piston and the piston connecting rod and the sum of the gravity force between the second piston and the piston connecting rod.
5. The sunk-bottom type micro plastic collector according to claim 1, further comprising a connecting rope, wherein one end of the connecting rope is connected with the bracket.
6. The bottom-sinking type micro plastic collector according to claim 1, wherein a balancing weight is arranged on the vertical guide rod and below the guide rod limiting block.
7. The bottom-sinking type micro-plastic collector according to claim 1, wherein the roller brush comprises a roller coaxial with the horizontal shaft and a plurality of bristles uniformly distributed on the outer side surface of the roller, the roller is fixedly connected with the horizontal shaft, the bristles extend in the radial direction of the roller, and the length of the bristles is greater than the distance between the axis of the horizontal shaft and the lower end surface of the vertical isolation cylinder.
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| CN112525603B (en) * | 2021-02-08 | 2021-05-07 | 天宇利水信息技术成都有限公司 | Silt sampling equipment suitable for flood season river |
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| JP3371297B2 (en) * | 1993-08-11 | 2003-01-27 | 財団法人シップ・アンド・オーシャン財団 | Automatic water sampling device and automatic water sampling method for deep sea water |
| US6006613A (en) * | 1997-07-09 | 1999-12-28 | Trippensee Corporation | Underwater sampling apparatus |
| CN104614203B (en) * | 2014-12-30 | 2017-03-29 | 浙江省海洋水产研究所 | Trigger-type seabed water sampling system |
| CN105052848B (en) * | 2015-08-24 | 2017-06-06 | 泉州森泸玩具有限公司 | A kind of sinking type shrimp catcher |
| CN106092662B (en) * | 2016-06-02 | 2018-12-21 | 中国地质调查局油气资源调查中心 | A kind of trigger device of sea floor sampling equipment |
| CN107727434B (en) * | 2017-08-17 | 2019-09-24 | 浙江省海洋水产研究所 | A kind of ECOLOGICAL ENVIRONMENTAL MONITORING of aquaculture sea area acquisition equipment |
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